melt yesterday morning. it was gone before 11:00. this is the first year i can remember working here, 17 years, we haven't been able to get it at will. >> reporter: in chicago, a record 3,000 people embraced the cold, splashing in a frigid lake michigan for the annual polar plunge, raising money for the special olympics. among them? mayor rahm emanuel and "tonight show" host jimmy fallon. >> he just went in. he's got his suit on. look at him. he is wet, and he is cold. >> reporter: as this storm continues its march to the east coast, airlines have already canceled about 1,500 flights for tomorrow. lester? >> john yang tonight, thanks. we want to take a closer look tonight at the path of the storm. this is live radar that shows the scope and gives you an idea of where it's heading. for more, let's bring in weather channel meteorologist mike seidel. he's in st. charles, missouri, tonight. mike? >> reporter: good evening, lester. once again, another day of misery in the midwest.